Drive controller



Nov. 9, ".9434 H. A. WAGNER ETAL 2,334,137

' DRIVE CONTROLLER Filed May 18, 1942 A 3 Sheets-Sheet 1 HAROLD A. WAGNER J ELMER ,A. WAGNER .56.? INVENIORS Fig .5 6. mgwvafimw.

ATfOH/VE H. A. WAGNER E1" AL Nova 5?, i943.

DRIVE CONTROLLER Filed May 18, 1942 3 Sheets-Sheet 2 m Nmm GNO AGT 5 WW v A .v D N 1 mm mm H93. Fm Q Ca: Lblw .u 7 g 5 1 Pl m ATTORNEY Nov. 9, 1943. H. A. WAGNER ET AL 2,334,137

DRIVE CONTROLLER Filed May 18 19 221 3 Sheets-Sheet 3 g 5 g i Iii]? 5 O 145 HAROLD v WAGNER 94 106 141 ELMER A. WAGNER 7 INVENTORS ATTORNEY Liquidmeasuring device. H

In certain instances it is desired to drive 'ap- L paratus intermittentlyfrom 'a continuously oper- .manual and automatic Patented Nov. 9,-1943 i.

' Application Portland, Greg. I 7 May 18', 1942, Serial No. 443,374

15 Claims. (o1. 1929-139) This invention relates to drive control devices, and more particularly todevices for controlling a coupling connection between driving and driven means. v I This application. is a continuation-impart of our copending patent application; Serial No. 409,180, filed September ating prime mover., Thi s-i s particularly true in cases Where the prime m'over-engine'is connected for steadily, driving a main load, and Where the additional apparatus is of arelatively lightlo'ad auxiliary ty'pe wliich may' readily be carriedvby f i 'onl nd entitled breaking-of theldriving connectioneither by the;

manual controller or by the timing device. h A further Object of thelinvention is to provide a new and improved control arrangement fora driving coupling between a driving and driven means includingQa-manual controller, andarij automatic timer for terminating the operation of p p the drivingconnection following initiation there'- th main engine alongwith the main load or at. least during'inter'mittent;periods. .Afsuitable' power takeeoff may pe'provided including a "clutch or other similar couplingjandwhich inturn may i be controlled in accordance With therequircinents of the apparatus tobedriventherethroughl Q The" controllingv means for such a coupling ina'ylbe adapted for either manual or automatic operation,'o r both. ,It isj witn arrangementsof the latter type thatthe present invention is primarily concerned. i

A general object of the presen iaanadngmr: fore, is to provide a new and improved combined control arrangement fora.

driving connection. More specifically, it is an object of the injven eludes of the manual" controller 'with provision .for locking 'thdtimer againstnnauthorized adjust mentand also for locking the manual controller against operation for breaking the drivingconnectio nl' I fIn accordance with an illustratedf ernbodiment Y of the invention, a releasable connection such as a clutch is provided between'a driving meariasuch C n tinuously' rotating "shaft; and a drivenjf The control means for the clutch inmanual operating lever through, which the clutch may. be shifted tothe'fengagedj posi tion and a 1 latclfarrangern'ent i or retaining clutchrin such position. The control meansalso,

includes anfautornatic'timing device which is set f 'iiito operationll pori manipulation of the lever t o' 25" the clutch engagingposition and which is so arranged'as to'eiiect tripping of,the latch after a" tionto provide a new andQimproved control art-,

rangement for a coupling between driving'hand Q driven means, hvgvvhich the initial engagement f h c lin ma be effe t dimanuallyand the ede d r 'ie of r bn 2 th d ii hjl device. The latch may also be tripped atanytime I V within such period bj moving the hand lever the reversedirectioir' Follovvin gatripping of thelatoh qwert the timing means or by the ncl1eve het m i1a meah iif laii s m y. i stored to tl einitial position. The timing means is adjustable sothatthe operating period for the disengagement thereof efiected automatically followingapredetermined'peripd of operation. A further object or. the invention is to provide a new a e improv ii rq lar a 'ement ra driving; connection between: driving" and driven. 1 means Wherebypom'plete manual control may be;

had of the driving connection throughout a predetermined periodof enema upon the terminanectiorrwill be disrupted automatically.

tion of such period of operation, the drivingcom Another object of the invention ijsto provide all new and improved control arrangement 1 for a driving connection' between a driving and driven means including a: manually operable control means and an adjustable automatic timing device for predetermihing the period of operation of the driving connection in the eventthat it is not previously; terminated through operation of the manual'controller, tl1e timing device being automatically reset to .ist'a'rtin'g' position" upon driven means bef-varied thr ougl' ra suitable range. A'locking means is provided which, if desiredQmavbe so set thatjthetripping, of the latch can-be effected only through;operation of the timer adjustment thereof 1Furtlierobjects: e dvantagesgermina tion will appear from the iollowingj des cription,

taken in connection with the accompanying drawings; while the features of noveltyv willbe pointed] outwith'g'reater particularity. in the appended claims.

Inthe drawings, Figure 1 -is a side'elevation a'drive controllergaccordingto one form of the invention, a side cover plate of the housing being removed to show more clearly the arrangement} of certain internal parts of the apparatus; Figure I 2 is a plan view of the controller shown in Figure 1; Figured is a side elevation of one portion of the drive controller mechanism illustrating oer 51111:a second-positionnofthe loeking means.

the timer may also belockedagainst unauthorized through ch v the pump I 2 the clutch elements 2 l' and 22 are tain parts in a second position of adjustment;

Figure {1: is a cross sectional view taken along the line l-'d of Figure 2; Figure 5 is a fragmentary view taken along the line 55 of Figure 2; Figure 6 is a view in perspective of one detailof the controller; Figure '7 is'a side elevation of a controller fora driving connection according to a second modification-of the inventionj Figure 8 is a planview of thecontrol device illustrated in Figure '7; and Figure ;9;is an end viewof'aportion of the controller of' Figure 7. In the ensuing description the control arrangeeffecting the control of the driving connectionto a liquid delivery pump such as may be provided on a'concretemixer for supplying predetermined:

' ment will be described as it may be adapted for" I measured quantities of water to the mixer drum.- It will become obvious, howeven'as'the-descrip- J tion proceeds, that the control arrangement of the instant invention is not to be necessarily "limited in, its applicability to. a pump, but that this ismerely one typical form 'ofa driven means, the

operation. -of which is to be controlled,

Referring'moreparticularly to Figures 1 to 6, inclusive, .of the drawings; the controlle'rmechanism' of the inventiongcomprises a sheet metal housing, indicated generally at l0, having a base plate U, oneendl of which extends considerably beyond ;thehousing proper, :thereby. providing a mountingplatform for 'an auxiliarydevice to be 1 driven, therefrom such .as affluid delivery pump 1 2,. Theextension of the base" issupported by downwardly tapered side wall portions I3; ofitl ie housing.- -The==pumpl2-is illustrated as being of thedouble elementrotating type having a shaft lflgwhich is qconnected by vcoupling l5; to the driven shaft IS extending from the controller. The shaft 16 is suitablyjournaled in bearings.

Land I 8; which are mounted upon the housing sidewall. l gand upon an inner wall portion 20, respectively. As illustrated more clearly in the cross sectionalview, of; Figure 4,, the shaft 151 is adapted to be-driven-through cooperative frictional ,eng agement between the clutch "plates, 2 andTZ Z the-clutchTplate 2| being rigidly secured, to. theshaft l6, while clutch plate 22is mountedt upo ahulo 2.31whichin turn is freely rotatably arr a g ed upon shaftlfi and slida'blylthereupon witha' sprocket 125} which i is adapted to be driven achain 26'Ztrain ed" .thereaboiit and extending downwardly thr igh an opening- -in,-the base i) "n and connected to aqshaftdriv en k I itablejprime mover-lnot showmv It isto be understood. that the prime mover isfnor 3 many continuously rotating, v on .atfleast, dur-.

ingis uchjperiods,that the pump'Ta iXiliary .12 'is to beintermittently 'operated; Thus. the clutch;

" S normally f continuously-3- driven shifted; relatively towards each other to 'the engaged o'sitio'ri forfeife ctingjaidriving connection tigereb tween.

. opera ing means mi the clutch comprises i a rocker; shaft w extendingat right angles be-,.

n'eath the" shaft 'l 6 between the. clutch and, the

" shaft bearing -I-8,.the opposite ends of the rocker shaft-. 307 being suitably Zjourn aled in "the outer housing side wall- 3L and an inner wall portion 32,.QThe rocker shaft 3!! is providedwith a right angularly extending lever arm 33 which is con- Y n'ec'ted by-luiklt l t'o a secondrocker shaft 35 for operationjtherebyl:.The rocker: shaft 30 is provided omatoseprojections 31 extending upcent housing wall I9. V-rockerarm 30 the clutch'plate 22 will pull away from the clutch plate 21, breaking the driving connection therebetween,

Theoperating shaft 35'extends transversely of wardly adjacent opposite sides of the shaft l6 and are adapted to engage with the end bearing 7 portion 38 of the driving hub 23 of the clutch. Upon movement of the rocker shaft 30 in the clockwise direction as viewed in Figure 4, the

yoke portions 31 engage with the hub bearing 38 to shift the clutch plate 22 axially of the shaft it to the right and compress the friction disc 33 between it and the clutch plate 1l, thereby effecting driving connection for'the shaft iii. A suitable thrust bearing 4! is provided between the hub of the clutch vplate 2| and the adja- Upon a releasing of the the housing, thatis, at right angles with respect to the driven shaft l5, and is journaled at its oppositeends in the housing sidewalls.

erating shaft is connected for actuation :by any suitable omeans such. as lever/4 2 oivotally mounted as has an. upon the base If. It: will readily b understood as the" description proceeds; thatthe lever .42 'may be operated manually,;-di rectly--or n r tl or by anyjsuitable automatic condi v tion'responsivedevice} Thetoperating shaft-35 isv provided with an a'rrrf lfl'p.which-1S connectedat:

toggle comprising links 4'4 and'l45 the lowermost 'end of Ithelinlg'fiifbein g pivotally mounted upon. g a f xed brackettdfi. ,Attached to the central pivotj 41,011 the c toggle 11i1'1ks1t 4.,45' .is a triangularly shaped latch pIateQIlB having lai.1atch.49- formed I in the lower end thereof; The} opferating'leverfit gis connectedbylalinli 51 to theiupper cornertz V of the latch .platefl lflL Thefout'ermostend of the link 5!. extends through anvoperiingiprovided inan; i earf53 attached toIthesidefofQt-he lever 42, a stop 54" being provided bill the iopter end orthe link 51 .sothatupon rotationlq ktl lever 42in the clock-v; wise dire'oti6nof rotation-a boutits pivotal support A in the latclif plate 48 win belshifted toftheright.

straightening the toggle links 44,145.. .Becauseo'f the. fact th'atlthe lower, end of link this.stationarily anchored,straightening,,.'of the toggle links: will cause 'an'upwa'rd movement of the out'e'rf en'd of the operatingshaft arm 43 tocausefrotation of the operatingoshaftfifi in theclookwise direc v; ti'ong, In the released position of theJatCh-M', as illustrated in Figure 1, the nose of the latch rests," 1 upon a plate..56.rigidly-secured. toandextending i outwardlyfrom the housingsidewall !v9.. The; plate 5.6; has a; portion "cutaway so as to define. a shoulder 57 tobe cooperatively engagedliytl latch AB upon movement. of the latch plate flit 1 the extremarightlpositioz r through operation of-., lever 42 inthe clockwiseldirection, It willbe. old-v} j served that' by virtue lofthe fact that the eon-v of Figure 3.

effecting drivingof the auxiliary l2.

Ar'eleasing of thelatch 9 may be eff eoted; V

movement oft hejoperating lever 42 inthe re verse-direction, orto the left. The-dink 5! is provided with a second stop 53 which; uponen:

gagem'ent by the ear 53 onthe lever 42, will ex- 1 t a fi upon h la ch. pla 9 in t e count 11 The op- I assgis'zi cally the: release of the latch following a predetermined period ofoperation of theauxiliary' driven device. t2 independently of the operating. lever 42 once the clutch 2f, 22 has been shifted to the engaged position thereby. The timingdevice comprises a dial controller El supported for free rotation. about a shaft 62;

The; dialcontroller is adapted to be connected for rotation. with the: driven auxiliary l2 through a releasable driving connection such as a clutch. As illustrated, the hub of. the dial controller is provided with a clutch disc 65 which is adapted to be driven from a cooperating driving disc element 66. The disc element 66' is covered with a friction facing 64,. such as rubber. In the modification illustrated in Figures 1 to 6, inclusive, the controller clutch 65, 65 is adapted to be driven through a gear reduction unit 51 from shaft 6% extending from onset the rotating elements of the pump i2. It will be understood that this particular driving" connection is convenient in the specific application shown, though it will be obvious that the gear reduction device 61 may be" equally well connected for direct operation by the shaft It. The shaft 69 of the gear reductiondevice bl supporting the clutch'disc 66 is axially'movable, at least a short distance, through the housing of the gear reduction device.- The shaft 59 projects.

from the opposite side of the housing with re-' the shaft GG'upon rotation of the operatingshaft 35 in the clockwise direction to efiie'ct" movement of the shaft 69 to the leit. Such movement of the shaft 69 effects driving engagement' between the clutch elements 65 and 6 6 and hence rotation of the dial controller 64 loosely mounted on the shaft 52. The clutch element 66 and shaft $9 are normaliy biased to the, right,

or to the clutch disengaged position. by means 65,. 66 will simultaneously be moved to them.- gaged position, whereuponthe dial controller 61 will be. rotated at a rate corresponding with the ratev of: operation of the auxiliary device [2. Following a predetermined period of operation of the auxiliary device [2, and hence, a, predetermined angle ott movement of the dial controller 6|, the stop pin will engage with the end of the arm to effect rotation of the crank arm 86 to cause lifting of the latch 49 from behind the shoulder 51 of: plate 56 Upon such tripping of the latch 49 the main clutch 2|, 22 will auto-- matically be moved todisengaged" position, and simultaneously the controller dial clutch 65, 66;

-. will also be disengaged.

Upon movement of the dial controller clutch 6 -5,, 66 to the disengaged position, the dial controller is automatically restored to a set position. by means ofa helical spring 8 secured at one end. to the hub of the dial controller Bi and at the other" endto a stationary bracket 88." Movement'of'the controller dial 6 I to the reset position is determined by means of'a setting disc 90 rotatabl y mounted upon a suitable support 9i. The disc 9!]: is provided with a radially extending stop plate 92 which projects outwardly from the face thereof and which is adapted to be cooperatively engaged by a stoppin 93 secured to and extending outwardly from the adjacent side of the dial controller 6|. ting disc 90' extends outwardly through a slot in a side wall of the housing as indicated at 94- whereby the setting disc 90 may be manually adjusted for predetermining the set position of 7 controller 6|, but'such arrangement is merely a matter of convenience whereby the overall size of the apparatus may be kept at a minimum. It

will readily be understood that inasmuch as the of a small spring '56 extended therebetween and arranged about the shaft 62; The shaft 62 is secured rigidly to the hub of thegclutch disc element 66.

The dial controller 61 is provided with an eccentric stop pin 8-0 which maybe secured to and extend rearwardly from the clutch disc E5, the

stop pin Bilis a latch tripping member Bl suitably journaled adjacent its opposite ends in brackets 83 and 84 fixed to the housing structure; The

member BI is provided with one lever. arm ,85, the outermost end of which extends into-the space between the discs 55 and 82 and in the path of movement of the stop pin 80. The-opposite end of the member 8| is provided-with a lever" portion 85 which extends adjacent the end of the latch 49 hooked over the shoulder 51 of plate 55, as shown more clearly in FigureB. 3

Upon operation of the lever 42to the clutch engaged position for initiating the operation of the auxiliary device 12, the controller dial clutch edge of the setting disc 90 is to extend beyond the side wall of the housing, and the dial controller 6! is to be contained wholly therewithin,

I diameter of thesetting disc 90 may be kept within reasonabledimensions. A disc 96 secured to the end of the shaft supporting the setting disc 90 extends adjacent the end of a button 95 inserted into the end of the axial bore through the hub of the dial 6|. The disc 96 acts as a stop to prevent movement of the dial GI 01? of the end of the supporting shaft 62 upon which the dial controller is mounted for free rotation. Ample space exists between the adjacent ends of the button studand the shaft 62 so as topermit axial movement of the shaft 62 as the clutch 65, 65 is engaged.

The om controller 3! is provided with a cylin-- drical peripheral flange portion 9'! which may be suitably graduated and calibrated in accordance with the operational characteristics of the auxiliary device 1?. and which indicia may be readwith reference-to a pointer 98 through a position by means of'the operating lever 42, in. which position it is retained by means of the latch arrangement 48, 49 until the latch ;is

A peripheral edge portion of the settrippedieithe'rsby:reverse 'movenienti'of Zthe operating: lover. or iautomatically -by'iopera'tiorr'of the timerideviceiItmay be desired tosso. adjust the:

controllen as to in's'ure that the: driven device',

whenzitsloperati'on isflonce initiated, will continue inno'peration fora predetermined period of time beyondsthe Ifurther) control of the operator.; The controller device of the present. invention -includes...a1.cam shaft H15, .shown more clearly infth'e perspective. View of Figure 6, whichis suit direction extending toward-the operating handle 42; vWhen the handle I56 is operated to the position illustrated in Figure '3, the outermost end ofthe arm Ill8extends intothe :path. of movementof the operating lever 42 so as to prevent movement of the lever into engagementwith the stopr58 onvthe latch controllinglinkliI, which is necessary inorder to effect a tripping of the latch 49 by the operatinghandle. The handle I may be locked in such position by means of 'a padlock extending through eyelets provided on the handleJfiE and on thejhousing, respectively. When the handle I56 vis shifted to the vertical position r orto the directly oppositeposition, then the arm I 08- is withdrawn sufficiently from the path of 4 movement of the operating'lever 42 to permit engagement'of thestop 58 by the lever to effect tripping of the latch mechanism 48. e A lso-provided on the-cam shaft I85 is a second. eccentric II 3 formed by removing one side portion of the shaft Ill5 and which eccentric is arranged in line with a lever H4 pivotally mounted upon abracket H5 secured relative to the housing. Adapted to be engaged by the swinging end of the lever H4 is a plunger II 5 slidably arranged within a bushing I H, the outer endof-the plunger IIii being adapted to engage with the side of the periphery of the setting disc 90, -In the vertical position of the handle I03 thelever'I I4 is permitted to swing in the counterclockwisedirection about its pivotal support, thereby releasing the pressure through spring I it upon the end of the plunger II6, thus permitting free adjustment of the setting disc 9E! Y and hence ofthe dial controller 6 I; Upon movementof the handle I95 either to the extreme right or left positions, as shown in Figure l, the earn 1 I3 will effect movement of the'lever l I4 in the clockwise direction to compressthe spring I I8, thereby forcing the plunger I I6 into engagement with the disc Qll. The peripheral edge por-' tion of the disc 98 is preferably knurled in order to facilitate manual adjustment thereof upon grasping the edge. portion 94 projecting beyond the side wall of the housing. plunger H6 is similarly knurled and is so arranged as to engage with the knurled edge portion of the setting disc 95 within the housing so that a relatively slight pressure exerted through the plunger IIS will firmly hold the setting disc 99 against unauthorized adjustment in either of the locked positions of the handle I06.

In order positively to'prevent further rotation of the driven device I2 following disengagement of the main clutch 21 and 22, such as may occur upon dragging of the clutch elements following release of the operating shaft 35, an arrange The end of the ecency:

ment is provided such as. is illustrated more clearly in Figure 5. The periphery of the drivenclutch disc M, which extends somewhat beyond the periphery ofthe driving clutch disc 22, is provided with notches I20 facing in the direction of driven rotation, as, indicated by the arrow I 2|. A lever I22, pivoted intermediate its ends as at I23 upon the housing wall I9, is normally biased into engagement with the peripheral edge of the clutch disc 2| by means of a' spring I24 acting thereagainst. The operating shaft 35 is provided with an arm I25 which, upon movement of the operating shaft to the clutch engaged position, engages with the outer end of thelever I22 to remove the opposite end thereof from the disc 2 I. Upon rotation of the operating shaft 35 in the opposite direction, or to the clutch releasing position, the lever I25 is removed from the lever I 22 which thereuponis forced by spring I24 into engagement'with the notched peripheral edge of the disc 2| and further rotation of the disc, and hence of the driven device I2, is

precluded.

In the modification just described a controller is provided as a complete unit including as an element thereof a main clutch through which the driving connection is established for an auxiliary driven device, which device may, furthermore, be mounted upon an extension of the base plate of the controller. Obviously, the invention is not necessarily to be so limited in that the timer mechanism may be provided as a separate integral unit and which may be arranged'for controlling the operation of an operating lever for a clutch mounted externally "of the controller housing. The modification illustrated in Figures 7 to 9 is adapted for use in connection with such an externally arranged clutch. Referring more" arm I34. An auxiliary device I35 such as a pump is connected by chain I36 to the driven shaft I3I'for operation thereby. For controlling the coupling between the clutch elements I 32 and I33 is a-controller 'unit I3! which is substan tially similar to the controller as previously deoneratingshaft 30' and the'clutch engaging lever I22 embodied therein. The dial controller mechanismis in this instance driven through a chain I38 from; the driven shaft I3I which chain is trained over a sprocket I39 provided on the end of the shaft I0 extending from the gear reduc-,

tion unit 61.

Mounted on the outside of the controller hous- I ing and pivoted coaxially with the operating lever 42 is a clutch operating lever MI. the upper end of which is provided with a ri ht angular arm portion I42 extending behind-the lever 42'. The lower end of the lever I 4| is connected by link I43 to the upperend of the clutch shifter ing of the controller I31. I The latch arm I45 is 2,334,137 biased downwardly by spring suitably @611. I

shoulder "I41 on the end of the controller-shaft 35. Inthis position 'the shaft I3I is driven by the shaft I30 and hence both the auiriliary device I35 and the timer controller are simultaneously driven through chain connections I36 and I38, respectively, with shaft I3I. Following a ,pr'ecle termined period of rotation of the shaft l3'l', depending upon the setting of the' controller, the latch mechanism 49 thereof; will be tripped in the manner as previously. described, resulting in a collapsing of the toggle arms 44,45 and rotation of the operating shaft 35 of the controller'in a -'justablecontrol dial, means operatively connect ing said control dial to said driven me'ans lever -m'eans operable upon predetermined angular counterclockwise"direction. 3 Upon rotation of the shaft 35 in such direction, the latch- I46 of the arm I45 will slide from the shoulder I4! to permit movement of the clutchoperating arm MI in the counterclockwise direction of rotation un; der' the force of the biasing spring I49.

' means biasing said operating means to the clutch Suchmovement of the lever I4I will effect sliding movement of the clutch element I32 upon shaft the driving coupling 'therebetween is' disrupted,

I I away from the clutch element I33 and hence Resetting of the apparatus i effectedby movement of the lever 42 in the clockwise direction'of rotation; which will carry with it the lever "Mi, simultaneously resetting the controller mechanism and shifting the clutch I32, I33 to the "engaged position, the lever I41 being latched in such position by the arm I45.

With the controllerlocking handle I05 in the position shown in Figure 7, the controller may be tripped at anytime by movement of the lever 42 in the counterclockwise"direction of rotation and into engagement with the stop 58 on the'link 5i" I as previously described, Tripping of the controller through lever 42 will eiIect rotation of the shaft and release of the latch arm I to perengaged position.

mit movement of the clutchfl32, 133 to the dis Having describedthe" principles or the inveni tion in what is considered to be" preferred embodiments thereof, it is desiredthat it be understood that the various specific details shownjand described are-merely illustrative, and 'thatthe in} vention may becarried out by-other means, j -Weclaim:

1. In combination, a

eratively connected to said drivenmeansamanually operable control means for saidclutch, 'hdlding means operably associated with saidmanually driving :means, a driven means; a clutch between said means, a device opmovement of said'control dial for eifeoting re lease of said holding means, and means for restoring said dial to the adjusted position following eaclrrelease of said holding means.

. 3. In combination, a driving means, a dri ven' means, a clutch between said meansjmanualopcrating means for said clutch, a holding means for holding saidoperatingmeans in the clutch engaged position, an adjustable controldial con nested for operation by said driven means, lever means operable by said dial upon predetermined angular movement thereof for effecting tripping o'f' said-holding f-means, and means for automati- I cally' restoring said dial to the adjusted position following each trippingof said holding means.

4. In combinatioma drive shaft, a; driven shaft, a clutch between said shafts, operating means for said clutch, a holding means for retaining said operating means in the clutch engaged position,

releasing position; an adjustable control dial;

' means operatively connecting said dial for rate;-

tion by said driven shaft, lever means operable by said control dial upon predetermined angular movement thereof for releasing said holding means, to permit movement of said clutch to released position, and means connectedv to said dial for automatically restoringsaiddial to the ad justed position following each releasing operation ofsaid clutch. i 'l l 5. In combination, a driving means, a driven means, a clutch between said means, operating means for shifting" said clutch to the engaged position, means biasing said operating means to the clutch releasedposition, a holding means for holding-said 'operating means in the clutch engaged position, a control-dial, means biasing saiddial for rotation inone direction, a dial clutch for operatively connecting said controldial to said driv en means for rotation thereby in the opposite di-- ,rection, means operable by said operating means operable means for holding said clutch in the engaged position, an adjustable control dial, clutch means connecting said dial for rotation by .said

driven means,leverlmeans operable upon predetermined angular movement of said dial for eifecting release of said holding means, and means associated with said dial for automatically restorg ing said dial to the adjusted position following j each operation ofsaid levermeans. v I

2. in combination, a driving1neans,-adriven means, a clutch between said means, manually operable control mean for said clutch, a holding: means operable upon movement of said control means toclutch engaging position for hold ing said clutch in the engaged position, and ad I for causing engagement of said dial clutch simultaneously 'with engagement of said first clutch,

and meansconnectedto said dial and operable upon predetermined angular movement of said dial foreifecting release of said clutches.

6. In combinatiom a driving means, a driven means, a clutchfojr operatively connecting said means, control means for shiftin said clutch to engaged position, means biasing said control means to clutch releas'ing position, a holding means "operatively' connected to said operating j means for holding said" operating means in the clutch engaged position, a control dialymeans 'ope ratively connecting said control dial withsaid drivenmea'ns, a spring connectedto said'dial bias-' ing said dial away'frorn a first limitgposition, a manually adjustablestop providing a second limit position for said dial; a stop on said dial, a lever engageable by said ,last mentioned-stop upon movement of saiddial to said first limit position for releasing said holding means. j

7. In combination, a driving means, a driven means, a clutch for operatively connecting saidij means, operating means for said clutch, a holding means operatively connected to said operating means for retaining said operating means in the ,clutch engaged position, a control "dial, a clutch connecting said dial for rotation with said driven means, means for effecting engagement of'saidf dial clutch simultaneouslyWith engagement of said first clutch, means biasing said dial away on said controller, lever means engageableb said from a first limit position, an adjustable stop providing asecond'lirnit position for said dial under the forceof said biasing means, a stop on said i dial, a lever engageable by saidglast mentioned stop upon movement of said dial to saidfirst limit 5 position, said lever engaging said holding means to effect release thereofand movement of said clutches to released position,

8. In combination, a dr ving means, a driven means, a clutch for operatively connecting said 10 means, operating means for shifting said clutch to the, engaged position, holding means for holding said operating means in the clutch engaged position, means biasing said operating means to the clutch releasingposition, a rotatable control- 15 lfer, clutch means connecting said controller for rotation in one direction by said driven means,

said operating means including meansfor ei fecting engagement of said controller clutch simultaneously with the engagement of said first 2Q clutch, spring means biasing said controller, in an opposite direction of rotation, manual means for adjusting said controller to a set position, a stoponlsaidcontroller, and means operatively conerating means'to thev clutch releasing position, a 35,

controller, means-including a clutch operatively connecting said controller for rotation in a first direction by said drivenmeans, said operating means including means for effecting engagement of saidcontrollier clutch simultaneously with-em. gagement of saidfirst clutch, means biasing said,

controller away from aiirst limit positionina secondnirection of rotation, a manually adjust able stop providing a second limit position-i017; said. controller, said controller normally-held ai st said. i n y sa d biasing mea asw last inentionedstop upon movement of said conti'oller to s d fi st l ii-p iiion t h driving connection with said driyen meanasaid lever ef- 6U fecting releasev of said holding means to; permit movement of said "clutches to releasing position, 10. fIncombina P On, a driving means,-a drivenv means, a clutch for operatively connecting said means, a rocker arm'ior operating saidclutcn to 5 the engaged position, an operating lever -f or;ro tating said rocker arm to the clutch engaged' position, holding means for retaining saidr oclger arr'nin' the clutch engage'dgp osition, a controller, means including a clutch foroperatively connect-1 ing."said controller for rotation by said driven means, means extending fromsaid rocker arm for effecting engagement of said controller clutch'si multaneously with' engagement of 1 said'jfirst' clutch, a stop on saidcontrolle'r, a lever operable 65 by said stop upon movement of said controller to a predetermined limit position through connec-,;= tion with said driven means, said lever arranged foreffecting release of said holding means' and permitting simultaneous movement or said- I the 7 Clu en a e lp iti ri-said holdin s.

clutches to released position, and means i ,oi re turning said controller toa second .limit' posit n upon releaseof said controller clutch, and ma nl ally adjustable means for limiting movement of v said controller to said second limit position.

' arias-137 -trol lever l. 1 k a m nat ,ncompr s n t a idrivingg ii. The combination comprising-a driving m s.- a driven. mtan ,as tchyfonv nera lv ly connecting said means, an operating lever: forlef ct nsshi ti si sa u c O-th nsa ds.=p.o.- sition, a holding means for retaining said operating lever in the, clutch; engaged-position, ayrotatable t ol r means in lu n a l' tphi rl'c nect a a gn o e iorrota i nby said d iven m an sai o ra i l ver; in u :l ver' ans p flsct ngten a eme tni said QQ trQ QL QI-utch simultaneously with engagement .;of 7 said. first clutch, a stop on; said controller; a releasing lever or sa d sm an ar an ed ct a ion" by said stop upon movement of said;controller,t0;.a first limit position throughv connection ,vvith; said driven,=me'ans, spring means for-returning'said controller to; a second limit; positionupon release of saidcontroller clutch, and manually adjustable means 'for'determining saidysecond limit position of saidcontroller, s. l l 1 l2, The combination, comprisin v a driving nce se dr v n. m s c tc I-Z operative v,

connecting said means, an operating lever for ef fecting engagement of said clutch, means-biasing I a said operatinglever to; the clutch releasing'posi-t i n, a h n m ns or; r t n said nerating.

lever inthe clutch engaging position, ,a rotatable 1 means for-efiecting engagement of saidcontroller clutch simultaneously with engagementof"said.

firstclutch, a stop on said controller, 'ajreleasing,

lever-for said holding meansadaptedto be en-- gaged by-said stop uponmovement of said coni;. troller througha predetermined angleby said, driven means, lever meansiconnected to said op erating lever and operable upon movement there-. I

, lever means to the clutch engaged-position, saidj -manual control lever being-movable inthereverse direction for effecting release cf 1 said holdingr means, a controller, means i ncluding; ayclutchifor;

Iw i 2 c nne n s sccniroll r for; a

ti n by said, driven ha t a tpnto sa c ntrol en;l

a releasinglever far said-holding meatisfiDfifib e a means f a k n a d settina ansza m n foperable by said :locking means for precluding! leasingof said holding meansgby saidmanual co 14. The means, a driven maans,

lu sh for-operativelv v si e f id me s; e p lj' l in .JmBa' -SZRYLI efiectmg n a e e t Q tfiaid 3 117 15 1. aam mialw,

control v r fo fifi iin 'p srat o p said. ;0

holding, means for retaining said operating meians engagement of said clutch, means for setting said eratively connected between said controller and said holding means whereby said holding means is automatically released following a predetermined period of operation of said driven means, means for adjusting said controller for varying said period, and means for locking said adjusting means against unauthorizedmanipulation, said locking means including means for precluding tripping of said holding means by said manually operable lever.

HAROLD A. WAGNER. ELMER A. WAGNER. 

